VT-73 Motorola Sound IN video?

[koviatt]

Originally Posted by bandersen

Unfortunately you wont be able to align this set with a B&K 415. The 415 is for the more modern 44 MHz IF, while the VT-71 uses the older 21 MHz IF.

Are you referring to the coil in the canister with the 1N34 detector diode ? It corresponds to A4 in the Sams alignment info. It affects the video IF curve along with A5 and A6. You'll need a sweep generator with markers and scope to properly adjust those coils.

I use a Wavetek 1002 for my alignments.

I was able to get a Heathkit T-3. Wasn't aware that the B&K 415 would not drop low enough to work on these pre 50 sets. I am new to aligning TV, so its a learning curve for me in that regard. Thanks for the info on the coils. I have spent considerable time on your channel and appreciate the investment you have made for the hobby. I was hoping to find a basic alignment step by step on one of these older sets. If you have a video like that let me know - I may have missed it.